Originally Posted by flatmap
How do the Moderna Series compare to the Primal Series? For example is the PS-500 voiced closely to the MS-400 with the same drivers and dimensions, but aimed at professionals? Or are MS and PS totally different sonic designs?
As far as acoustic values go there are slight differences. Frequency responces, sensitivity, max input power etc. Headroom did their own acoustic analysis on the two models and you can compare the results on their site if you'd like.
Aside from that, notable differences are the PS 500 is a full sized unit that doesn't fold up and has a long cable whereas the MS 400 does fold up (and comes with a case) and has a shorter cable.
So you could say the PS 500 is geared for home use and the MS 400 is suited for home, travel, and on the go type use.
Hope that was insightful for you